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Electrolytic reduction of alumina to alu...

Electrolytic reduction of alumina to aluminum by the Hall-Heroult process is carried out

A

In the presence of `NaCI`

B

In the presence of fluorite

C

In the presence of cryolite which forms a melt with lower melting temperature

D

In the presence of cryolite which forms a melt with higher melting temperature

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The correct Answer is:
C
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Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out:

Statement-1:Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried in the presence of cryolite. Statement-2:Cryolite contains aluminium.

Hall-Heroult's process is given by :

The funciton of adding cryolite in the electrolytic reduction of alumina by Hall-Heroult process is to :

ALLEN-METALLURGY-EXERCISE-05 [B]
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  2. The chemical process in the production of steel from haematite ore inv...

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  3. Electrolytic reduction of alumina to aluminum by the Hall-Heroult pro...

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  4. The chemical composition of slag formed during the smelting process in...

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  5. Which of the following process is used in the extractive metallurgy of...

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  6. In the process of extraction of gold, Roasted gold ore +CN^(-)+H2Oov...

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  7. The method chiefly used for the extraction of lead and tin from there ...

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  8. Which ore contains both iron and copper?

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  9. A(1) and A(2) are two ores of metal M.A(1) on calcination gives a blac...

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  10. Match the column :

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  11. Extraction of iron from zine blende is achieved by

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  12. Match the column:

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  13. Native silver metel froms a water solube, complesx with a dilute aqueo...

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  14. Copper is the most noble of first row transition metals and occurs in ...

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  15. Copper is the most noble of first row transition metals and occurs in ...

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  16. Copper is the most noble of first row transition metals and occurs in ...

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  17. Extraction of metal from the ore cassiterite involves

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  18. Oxidation states of the metal in the minerals haematite and magnetite,...

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  19. Ibn the cyanide extraction process of silver form aragetite are ,oxidi...

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  20. Sulfide ores are common for the metals.

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